2209973613604 has 135 divisors (see below), whose sum is σ = 4288321249121. Its totient is φ = 996496371360.

The previous prime is 2209973613553. The next prime is 2209973613607. The reversal of 2209973613604 is 4063163799022.

It is a happy number.

The square root of 2209973613604 is 1486598.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1158856556004 + 1051117057600 = 1076502^2 + 1025240^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2209973613607) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 31126388889 + ... + 31126388959.

Almost surely, 2^{2209973613604} is an apocalyptic number.

2209973613604 is the 1486598-th square number.

It is an amenable number.

2209973613604 is a deficient number, since it is larger than the sum of its proper divisors (2078347635517).

2209973613604 is an frugal number, since it uses more digits than its factorization.

2209973613604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 2209973613604 in words is "two trillion, two hundred nine billion, nine hundred seventy-three million, six hundred thirteen thousand, six hundred four".